Hydronium-jarosite Mineral Data

Hydronium-jarosite Mineral Data +

General Hydronium-jarosite Information

Chemical Formula:

(H3O)Fe+++3(SO4)2(OH)6

Composition:

Molecular Weight = 480.74 gm

Iron 34.85 % Fe 49.83 % Fe₂O₃

Hydrogen 1.89 % H 16.86 % H₂O

Sulfur 13.34 % S 33.31 % SO₃

Oxygen 49.92 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

(H₃O)Fe³⁺₃(SO₄)₂(OH)₆

Environment:

Oxidized zone of sulfide deposits.

IMA Status:

Approved IMA 1960

Locality:

Staszic Mine, Kolonia Staszic, Holy Cross Mountains, Lower Silesia, Poland. Link to MinDat.org Location Data.

Name Origin:

Named for the composition (hydronium = H + H2O) and jarosite.

Hydronium-jarosite Image

Images:

Hydronium-jarosite

Comments: Yellow, earthy hydronium-jarosite.
Location: Reiche Zeche Mine, Himmelfahrt Mine, Freiberg, Freiberg District, Erzgebirge, Saxony, Germany. Scale: Specimen size 3.3 cm.
© Thomas Witzke / Abraxas-Verlag

Hydronium-jarosite Crystallography

Axial Ratios:

a:c = 1:2.31229

Cell Dimensions:

a = 7.3559, c = 17.009, Z = 3; V = 797.04 Den(Calc)= 3.00

Crystal System:

Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 5.1(1), 3.13(0.9), 3.09(0.65),

Physical Properties of Hydronium-jarosite

Color:

Yellow, Dark straw yellow, Reddish brown, Brown.

Density:

2.496 - 2.905, Average = 2.7

Diaphaniety:

Transparent to Translucent

Hardness:

4-4.5 - Between Fluorite and Apatite

Luster:

Vitreous - Resinous

Optical Properties of Hydronium-jarosite

Gladstone-Dale:

CI meas= -0.111 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2733,KPDmeas= 0.3036,KC= 0.2732

Optical Data:

Uniaxial (-), e=1.82, w=1.82, bire=0.0000.

Calculated Properties of Hydronium-jarosite

Electron Density:

r_electron=2.98 gm/cc
note: r_{Hydronium-jarosite}=3.00 gm/cc.

Fermion Index

Fermion Index = 0.00863
Boson Index = 0.99137

Photoelectric:

PE_{Hydronium-jarosite}= 11.08 barns/electron
U=PE_{Hydronium-jarosite} x r_electron= 33.04 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hydronium-jarosite is Not Radioactive

Hydronium-jarosite Classification

Dana Class:

30.2.5.3 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.2)where (A B)2 XO4 Zq

(30.2.5)Alunite Group (Jarosite Subgroup)

30.2.5.1 Jarosite KFe3(SO4)2(OH)6 R 3 3

30.2.5.2 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m

30.2.5.3 Hydronium-jarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m

30.2.5.4 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m

30.2.5.5 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m

30.2.5.6 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m

30.2.5.7 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m

30.2.5.8 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m

Strunz Class:

VI/B.11-80 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. mostly big cations

VI/B.11 - Alunite group, Natroalunite - Jarosite - Beaverite

VI/B.11-10 Natroalunite NaAl3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-20 Alunite KAl3(SO4)2(OH)6 R 3m, R 3m Trig

VI/B.11-30 Ammonioalunite (NH4)Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-40 Minamiite (Na,Ca,K)Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-43 Huangite Ca0.5Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-45 Walthierite Ba0.5Al3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-50 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m

VI/B.11-60 Jarosite KFe3(SO4)2(OH)6 R 3 3

VI/B.11-65 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m

VI/B.11-70 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m

VI/B.11-80 Hydronium-jarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m

VI/B.11-90 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m

VI/B.11-100 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m

VI/B.11-110 Osarizawaite PbCuAl2(SO4)2(OH)6 R 3m 3m

VI/B.11-120 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m

Other Hydronium-jarosite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Hydronium-jarosite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Print or Cut-and-Paste your Hydronium-jarosite Specimen Label here :

Hydronium-jarosite

(H3O)Fe+++3(SO4)2(OH)6
Dana No: 30.2.5.3 Strunz No: VI/B.11-80
Locality:

Notes: